Finding the Fourth Proportional to 83,330.13, 124,995.19 and 21,000.63
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Solution
The fourth proportional to 83,330.13, 124,995.19 and 21,000.63 is: 31,500.94
Step by Step Solution
- Step 1: Write the proportion equation
83,330.13 : 124,995.19 = 21,000.63 : x - Step 2: Convert to fraction form
83,330.13/124,995.19 = 21,000.63/x - Step 3: Cross multiply
83,330.13x = 124,995.19 × 21,000.63 - Step 4: Simplify right side
83,330.13x = 2,624,977,736.97 - Step 5: Solve for x
x = 2,624,977,736.97/83,330.13 - Step 6: Final answer
x = 31,500.94
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.